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Simultaneous Resettability from One-Way Functions

机译:单向功能可同时复位

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Reset table-security, introduced by Canetti, Gold Reich, Goldwasser and Micali (STOC'00), considers the security of cryptographic two-party protocols (in particular zero-knowledge arguments) in a setting where the attacker may "reset" or "rewind" one of the players. The strongest notion of reset table security, simultaneous reset ability, introduced by Barak, Gold Reich, Goldwasser and Lindell (FOCS'01), requires reset table security to hold for both parties: in the context of zero-knowledge, both the soundness and the zero-knowledge conditions remain robust to resetting attacks. To date, all known constructions of protocols satisfying simultaneous reset table security rely on the existence of ZAPs; constructions of ZAPs are only known based on the existence of trapdoor permutations or number-theoretic assumptions. In this paper, we provide a new method for constructing protocols satisfying simultaneous reset table security while relying only on the minimal assumption of one-way functions. Our key results establish, assuming only one-way functions: - Every language in NP has an omega(1)-round simultaneously reset table witness indistinguishable argument system. - Every language in NP has a (polynomial-round) simultaneously reset table zero-knowledge argument system. The key conceptual insight in our technique is relying on black-box impossibility results for concurrent zero-knowledge to achieve reset table-security.
机译:由Canetti,Gold Reich,Goldwasser和Micali(STOC'00)引入的“重置表安全性”考虑了在攻击者可能“重置”或“倒带”的一位玩家。 Barak,Gold Reich,Goldwasser和Lindell(FOCS'01)提出的最强的重置表安全性概念,即同步重置功能,要求重置表安全性对双方都适用:在零知识的情况下,稳健性和可靠性零知识条件对于重新设置攻击仍然具有鲁棒性。迄今为止,满足同时复位表安全性的所有已知协议构造都依赖于ZAP的存在。仅基于活板门置换或数论假设的存在才知道ZAP的构造。在本文中,我们提供了一种新的构造协议的方法,该协议可以满足同时重置表安全性,同时仅依赖于单向功能的最小假设。我们的主要结果建立起来,假设仅具有单向功能:-NP中的每种语言都有一个omega(1)轮同时重置表见证人难以区分的论点系统。 -NP中的每种语言都有一个(多项式回合)同时重置表零知识参数系统。我们技术中的关键概念洞察力是依靠黑盒不可能结果并发零知识来实现​​重置表的安全性。

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